Participating Frequently

Question

Black printing as Green from Illustrator to Rasterlink

Forum|Forum|3 years ago
October 20, 2022
5 replies
2241 views

I currently use Illustrator 2022 v 26.3.1 and print on a Mimaki JV150-160. The printer and Illustrator have always communicated well and my prints and color matches have always been really good. Currently I am working with a file that is all values of black. I have printed this file in the past (about 2 months ago) with no issues, until now. It is now coming out with a green tone. I have contacted my printer manufacturer, and they told me to contact my dealer. My dealer has trouble shot and is thinking it is something within Illustrator.

My question is, has anyone encountered anything like this recently? Or does anyone have a solution. We have been trouble shooting for a couple of days and aren't anywhere near a solution.

This topic has been closed for replies.

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HsSrvnt1

Participant

Was this never resolved? I have an HP and the same thing happened. When I print images in my AI files the blacks on the images print as greens.

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Bobby Henderson

Community Expert

A number of different possible culprits can cause gray tones to turn green in prints. First of all, what is the nature of the artwork being prepared in Adobe Illustrator? Is the artwork in RGB or CMYK color space? I'll see some crazy looking results with RGB-based artwork bearing values well outside CMYK gamut range. What kind of RIP are you using with your HP printer (at my workplace we're using Onyx Thrive to control 3 HP Latex printers; RasterLink Pro runs our Mimaki flatbed printer).

There is also always the possible hardware issue. We've been dealing with all sorts of headaches involving our flatbed printer. A tech has been out twice in the last week working on it. Our newest HP printer, a 700W model, has had its own problems. The two older HP Latex 360 printers have been running like champs. They're solid after all these years. But the 360 models don't print white ink and you have to be able to print white ink on prints that will be back-lit. Anyway, failing print heads and other hardware-related issues can cause color shifts. Hopefully the problem you're experiencing is artwork related rather than a hardware problem.

chrisg11235813

Participating Frequently

Do you print directly from illustrator to the printer?

or do you save as PDF and then RIP that file?

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Bobby Henderson

Community Expert

The RIP application (RasterLink Pro in this case) controls the large format printer. Compatible art files, such as PDFs, are brought into the RIP application where print jobs are prepared.

chrisg11235813

Participating Frequently

Do you happen to have an "old" pdf of a file that has worked in the past?

Have you tried printing that file? -- if an old file prints differently, it is most likely the RIP that is printing differently.

Be sure all of your RIPs settings are the same as they were in the past. Make sure the RIP is using the correct profile for the media being printed.

there might also be a log in your printers RIP, if you can find the log of the last "good" print, you might be able to see the settings that were used to print that file.

Mike_Gondek10189183

Community Expert

Was very useful you mentioned this same file was printing good before. Would further help to establish which of the 2 stations below you are in:

Do all your files print bad

print test pattern to check all your ink nozzles are working to not low on ink, especially M & K
did anything change on your OS or Illustrator settings in regards to color management
has a setting on Mimaki gotten flipped

Does this file alone print bad

File >> Document Color Mode >> CMYK
Edit >> assign profile is the working the same as on your other files?
Rich black settings

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SueSchmidt~EberhartSignsAuthor

Participating Frequently

Hi Mike -

No, all files do not print bad.
We printed some test files from Mimaki that printed beautifully.
Test Pattern prints perfectly.
No colors are low on ink.
Nothing changed in Illustrator to my knowledge. I was even avoiding updating it because I also use Mimaki fine cut, and they do not have a version compatible with Illustrator 2023 yet. All firmware on the printer has been updated, as well the Rasterlink software has been updated though. But we did not do that until after the problem occured.
To my knowledge no setting in Mimaki got flipped. I change as few as possible settings per print to avoid too many variables.

It's not just this file. I have created upwards of 20 different test files trying to figure the issue out. I did figure out on Friday that even if I am creating the file with certain CMYK values, when brought in to RasterLink the values are not the same.
All documents are created in CMYK mode (that's all I work in since I print in CMYK).
I can honestly say I do not know a lot of how the color profiles work in Illustrator. I have never had to change them. But a document that has printed properly before shows the color profile as "Working CMYK: U.S. Web Coated (SWOP) v2.

Thank you so much for responding!

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Bobby Henderson

Community Expert

It's possible the color profile in the customer provided artwork is conflicting with your copy of Illustrator and/or RasterLink Pro. Also, when you mentioned "all values of black" do you mean the artwork is grayscale? Or did the user make a rich black by ramping all the CMYK values to their 100% max? I've seen that goof in client artwork before.

Some printers can be prone to output grayscale tones with a slightly green or brown or even red tint. We had all sorts of frustration with an old Roland inkjet printer that did that. Sometimes the tint shifts would vary from one end of the print to another. I wondered if weather and relative humidity could be a culprit. Our latex-based printers can print grays in a far more even manner. We have a Mimaki flatbed printer (with RasterLink Pro as its RIP) and haven't encountered any grays or blacks printing with a green shift.

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SueSchmidt~EberhartSignsAuthor

Participating Frequently

Thank you for the reply. I created the file. The file is a CMYK file, but the color values within the gradient are all shades of only black. Meaning, the gradient ranges from 80% black to 20% black. I printed a similar file two weeks ago and it printed just fine as well. And then at the beginning of this week I went to print the file for installation and it printed green. Its frustrating because nothing has changed and it's a drastic shift.

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Bobby Henderson

Community Expert

That is really strange. Do you know if any updates were applied to RasterLink Pro? I'm wondering if anything was changed in the RIP's print media profiles. On the hardware side I'd make sure your printer's print heads are clean and in good shape.